- 5 x 5 mm Round
 - 0.50 carats
 - AA Quality
 - eye-clean
 - Origin: Switzerland
 
Express your love with this vivid blue lab sapphire engagement ring. A 5mm round lab sapphire is nestled in a twist weave design adorned with .27 carats of diamonds. Lab Sapphire is known as the gem of sincerity and trust and is the birthstone for the month of September.